Help, I an trying to push the HU back in after connecting the technics harness but there is no room behind the HU I cant push it fully in

Am i missing a trick here?

The right side of this harness which goes against the OEM quadlock and all the wires are behind the HU and thus you cannot put the HU back into its place.

Move the above two mentioned Quadlocks + additional wires to the top of HU or bottom depending the room for access.
I think you have CCC and you should have climate control above the CCC.
In that case use the space where climate control goes and pull these additional stuff above the HU.
And gently push the HU back. If it get stuck than you have not created enough clearance at the back.

Take your time and use a torch to have proper insight to what you are doing.

Almost there have another half an inch to push back, i do have CCC but the space above the HU is not very big to pull the quadlock through so it has to go behind. I have almost spent hour and half now so going to try taking the drivers side footwell cover off to see if I can get my hand behind

Almost there have another half an inch to push back, i do have CCC but the space above the HU is not very big to pull the quadlock through so it has to go behind. I have almost spent hour and half now so going to try taking the drivers side footwell cover off to see if I can get my hand behind

Is this the same with the alpine harness?

Whichever harness you use, you will have same experience.
It is due to quadlocks + additional wires not being able to stay behind the HU.

Ive called it a day for today now will attempt again tommorow ive spent best part of 2 and half hours trying to do what should be simple to push back in a hu. My knuckles are bleeding/grazed and before i break anything i decided try again tommorow

What i dont understand even without the harness the hu was a pain to go back in. Its the big quadlock thats causing me grief the hole in the climate control not big enough to put my hand through to manovere the wire and i cant pull the quadlock up as its too big

If you have removed the passenger side footwell panel (under the glove box), and routed the wires from there, then use that area to bring all cable back as far as you can.

And with it, start pushing the HU back to its position.

I took the glovebox off but behind there is a thick plastic sheet which i unscrewed and could not pull it off. even then I think I wont have much access to the centre console. I have some help coming tommorow (i.e nimble hands to see if I ca get it fitted and will report back)

I spent roughly 3.5 hours of taking the HU out moving the wiring harness up and down/into the corners pushing the Hu back in. Every time i would get the HU back in but it would not go all the way in. My hands were too chunky to be ale to pull through the harness through climate control vent so I tried using needle nose pliers to pull gently the wires - all of this did not work.

I got my cousin to come help me as he has done many car audio installs and he tried to no avail. In the end we decided on cutting a small section of the plastic cage to the left hand side at the back which the quad lock could be pushed further down into the footwell. As a result the HU slid back in taking some effort as space is very limited.